Improvement in flour-bolts



B. LEWIS.

Improvement in Flour Bolts.

Patented April 16, 1872.

Wilwxsss:

UNITED STATES PATENT QFFIGE.

IRA B. LEWIS, OF BELVIDEBE, ILLINOIS.

IMPROVEMENT IN FLOUR-BOLTS.

Specification forming part of Letters Patent No. 125,819, dated April16, 1872 antedated April 6, 1872.

SPECIFICATION. To whom it may concern:

Be it known that I, IRA B. LEWIS, of Belvidere, in the county of Booneand State of Illinois, have invented certain Improvements inFlour-Bolts; and I do'hereby declare that the following is a full,clear, and exact description thereof, reference being had to theaccompanying drawing, which, together with the letters and figuresmarked thereon, forms part of this specification, and in which- Figure 1is a side elevation of a flour-bolt constructed after my invention, partof the exterior being broken away, and a portion of the central shaftand frame being shown in section. Fig.2 is an end view of the same,

with the bolting-cloth removed from the upper portion, exhibiting theexpansible frame. Fig. 3 is also an end view of a modified structure,partly in section. Figs. 4 and 5, upon a smaller scale, are views of thetwo ways of hanging the beaters or knockers to the shaft.

Like letters of reference made use of in the several figures indicatelike parts.

To enable those skilled in the art to make l and use my invention, Iwill proceed to describe the same with particularity, making use, in sodoing, of the aforesaid drawing.

General Description. A The central shaft A of the bolting-reel isconstructed, in the usual manner, with a bearin g, a, at each end, sothat the whole may be suspended in a proper frame-work and be properlygeared to work by power. Longitudinal strips or bars B are supported atequal distances from and upon several sides of the shaft by radial arms0. These radial arms penetrate the body of the shaft with a screwthread,and project, also, through'the bars B with a squared extremity or nut,d, squared to afford hold for a wrench. The bolting-web the reel, aspresently described.

Instead of the plates shown at Fig. 2 of the drawing, straps may be usedof metal, as shown at Fig. 3, the flat metal straps F overlapping eachother between the bars and held together by rivets or bolts f, throughslots in the metal, and further strengthened and secured by bands 9,encircling the double or lapped strips or bars J pivoted to the shaft ofthe reel by radial arms K. These arms K are attached to the shaft bymeans of a head-plate,

L, at each end, as is shown clearly at Fig. 4 of,

the drawing, or by means of staples, as shown at Fig. 5, in which lattercase the head-plates are dispensed with. As the reel or bolt is turnedby the proper machinery, these beaters are carried around with it untilthey reach the top and pass the perpendicular, when they fall by their.own gravity, and with a sudden motion, so that a shock is felt upon theweb of the bolt, which acts to clear the mesh in the usual manner of allknockers, as they are termed. By means of the screw-arm U the web may betightened at any time upon the reel, from the outside, by applying awrench to the heads of the said arms, which appear through the outersurface of the cloth. In changing a web or applying one. it is onlynecessary to cut the cloth to fit and sew it together before placing itupon the reel, after which it is slipped on and stretched by means ofthe screw-arms until it has attained the desired tension.

Claims.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-- 1. The overlapping slotted plates E or straps F,in connection with the expansible arms (J and bars B.

2. The arrangement and construction of the swinging beaters J K, shaftA, arms 0, bars B, and cloth or web D, substantially-as specified.

' IRA B LEWIS.

Attest: V

ROBERT PARKHILL, A. H. WHEELER.

